BLACK+DECKER HPB18 18-Volt Slide-Pack Battery Features high output battery cell No memory technology Provides up to 500 recharges High output nickel cadmium battery cells with "no memory" technology provide up to 500 recharges. Spring loaded batteries easily install and remove from the tool For use with all spring-loaded battery style Firestorm and Black & Decker 18-Volt products. High output nickel cadmium battery cells with "no memory" technology provide up to 500 recharges. Spring loaded batteries easily install and remove from the tool For use with all spring-loaded battery style Firestorm and Black & Decker 18-Volt products.